Thanks, but I'm actually a full-year resident and filing a full-year return on Form 511.
I ended up deleting the Form 561 from Forms View, deleting and then reentering the same long-term capital gain summary transaction from the step-by-step process. TurboTax still required an acquisition date in the Oklahoma process, so I entered 1/1/2000 (any date, as you suggested) and made sure the exclusion box was checked. If I'm forced to file Form 561, at least it now shows what I need - 0 Oklahoma Net Capital Gain on line 8I.
